Carrick, 23, has been signed from West Ham on a four-year deal that remains subject to a medical.
The midfielder has already chalked up over 150 appearances for West Ham and earned two full England caps.
Sporting Director Frank Arnesen commented: "Michael is a big English talent and we're very pleased to sign him, particularly at his young age.
"Technically he is very good, a great passer of the ball who can go left or right and with him we have a very strong midfield. We have high-quality competition for places and that's something any top club needs."
We are delighted to announce that we have agreed a deal to bring Michael Carrick to the club.